Which two security measures must an engineer follow then implementing Layer 2 and Layer 3 network design? (Choose two)

Which two security measures must an engineer follow then implementing Layer 2 and Layer 3 network design? (Choose two)
A . Utilize the native VLAN only on trunk ports to reduce the risk of an Double-Tagged 802.1q VLAN hopping attack
B . Utilize an access list to prevent the use of ARP to modify entries to the table
C . Utilize DHCP snooping on a per VLAN basis an apply ip dhcp snooping untrusted on all ports
D . Utilize the ARP inspection feature to help prevent the misuse of gARP
E . Utilize private VLANs an ensure that all ports are part of the isolated port group

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Answer: AD